1201551254 has 16 divisors (see below), whose sum is σ = 1828068000. Its totient is φ = 592251264.

The previous prime is 1201551251. The next prime is 1201551277. The reversal of 1201551254 is 4521551021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201551251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29534 + ... + 57230.

It is an arithmetic number, because the mean of its divisors is an integer number (114254250).

Almost surely, 2^1201551254 is an apocalyptic number.

1201551254 is a deficient number, since it is larger than the sum of its proper divisors (626516746).

1201551254 is a wasteful number, since it uses less digits than its factorization.

1201551254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28007.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1201551254 is about 34663.3993428227. The cubic root of 1201551254 is about 1063.1162757217.

The spelling of 1201551254 in words is "one billion, two hundred one million, five hundred fifty-one thousand, two hundred fifty-four".